Blundstone dress boot black full grain leather elastic side dress boot square toe styling v cut upper reduces stitching exposure conventionally lasted construction poron xrd in the heel strike zone for increased shock protection eva classic comfort footbed with poron xrd insert in the heel strike zone polyurethane pu midsolethermo urethane tpu outsole highly resistant to hydrolysis and microbial attack oil acid and organic fat resistant outsole heat resistant to 140c ergon